Secondary battery



a l. Y

C. HERING.

. SECONDARY BATTERY. l

Patented June 3, 1890.

(No Model.)

UNITED STATES PATENT @mica CARL HERING, OF PHILADELPHIA, PENNSYLVANIA.

S'ECON DARY BATTERY.

SPECIFICATION forming part of Letters Patent No. 429,273, dated June 8,1890.

Application iiled May 24, 1889.

To all whom t r11/ay concern.'

Be it known that I, CARL HERING, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia, State ofPennsylvania, have invented certain new and useful Improvements inSecondary Batteries, of which the following is a specification.

My invention relates to means of supporting the elements of a secondarybattery.

The object of my invention is to provide means for supporting theelements in the liquid to enable them to be readily removed, inspected,and renewed without having to unsolder joints, to provide a cheap andsimple method for supporting` the material of the anodes and cathodes,and to provide replacealolev conductors for the same.

Referring to the accompanying drawings, Figure 1 is a verticalcross-section of a cell. Fig. 2 is an elevation of the same with someportion removed. Fig. 3 is a top view of same. Fig. 4 shows twoconnected conductors for the active material. Fig. 5 shows one block ofthe active material. Fig. 6 is a vertical cross-section of a cellcontaining only one pair of blocks.

A A are solid blocks of lead peroxide, which may be made by mixing leadoxide with a solution of a salt of lead, pressing the mixture in a moldand drying it and forming it, one side of each heilig fiat andpreferably surfaced and the other side being somewhat cylindrical.

B B are blocks of spongy lead.

C C are the replaceable conductors, which are made of lead or leadalloy, and which lie against the fiat sides of the blocks of activematerial.

D D are non-conducting straps, preferably perforated, which lie againstthe rounded sides of the blocks of active material.

E E are rigid plates of non-conducting material.

F F are non-conducting bolts, which pass through the whole set of platescomposing a cell and bind them together.

G G are stops of insulated material between the straps D D, by whichthey are held apart, and the pressure of the bolts is brought to bearupon the blocks A A and B B.

H H are stops of non-conducting material between the straps and at theedges of the Serial No. 311,931. (No model.)

spongy lead blocks B B, relieving them from excessive pressure from thebolts F F. The conductors C C are connected in the ordinary way at theirtop, forming the terminals of the cell.

I do not bind myself, in the construction and connection of asecondary-battery cell made in the manner described, since, should anyother method be hereafter discovered for making porous battery-plates,it is evident that I may use the same wit-hout departing from theprinciples of my invention herein described. It is evident that a cellmay contain one pair of blocks, as shown in Fig. 6, or two pairs or fourpairs, as shown in Fig. l, or that its size may be increased in anydirection by increasing the number of these sets of blocks vertically orin either direction horizontally, and therewith the capacity. In thisway any number of blocks may be combined into one cell. These blocks Imaybe made of one standard size-say of ten ampere hours capacityand acell of any dimensions can thus be built up with them. Small blocksadapted to this purpose are readily molded or pressed, and can thereforebe made very cheaply.

The only perishable part-namely, the lead conductors for the peroxideplates--can'i readily be replaced at small cost, and any defect` iveblocks can readily be renewed, and a block which may break will notnecessarily fall out, but will remain in as good working condition asbefore. The dead-Weight is reduced to a minimum. Ample room is given forexpansion in all directions, as well as for unequal expansion of theactive material and its conductor, and buckling is eectually prevented.

I claim as my invention- 1. The combination, in a secondary-batterycell, of two or more blocks of lead peroxide in positions parallel toeach other, with removable eonducting-plates and two or more blocks ofspongy lead in positions parallel to each other, with conducting-platesa-nd removable clamps adapted to hold said blocks severally in Contactwith their conducting-plates and upon removal to allow said plates andblocks to be removed.

2. The combination, with two lead peroxide blocks, as A, and two spongylead blocks, as B, having conducting-backings, as C, between IOO All.The een'lbinsLtien,with :L peroxide bleek, ns A, and :L spengy lendbleek, as l, eendneters, as C, clamps, as E F, and steps, als Gand ll,ef perforated flexible nen-conducting straps, as l), adapted te receivethe pressure 0 the elemp, te held the blocks in contact with theirConductors, und te admit the pas- Sage ef the current through theperferatiens.

VEARL IIERING.

lVitneSses;

(menen I IeUsE, IIENRY V. MASSEY.

